<div dir="auto"><div><br><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">вт, 7 нояб. 2023 г., 18:47 Andrew Randrianasulu <<a href="mailto:randrianasulu@gmail.com" target="_blank" rel="noreferrer">randrianasulu@gmail.com</a>>:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div><br><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">вт, 7 нояб. 2023 г., 18:32 Andrew Randrianasulu <<a href="mailto:randrianasulu@gmail.com" rel="noreferrer noreferrer noreferrer" target="_blank">randrianasulu@gmail.com</a>>:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div><br><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">вт, 7 нояб. 2023 г., 18:13 Andrew Randrianasulu <<a href="mailto:randrianasulu@gmail.com" rel="noreferrer noreferrer noreferrer noreferrer" target="_blank">randrianasulu@gmail.com</a>>:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><a href="https://blender.stackexchange.com/questions/46825/render-with-a-wider-dynamic-range-in-cycles-to-produce-photorealistic-looking-im" rel="noreferrer noreferrer noreferrer noreferrer noreferrer" target="_blank">https://blender.stackexchange.com/questions/46825/render-with-a-wider-dynamic-range-in-cycles-to-produce-photorealistic-looking-im</a><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto">well, this one says EXR can hold quite a big value per channel, way above 1.0f, obviously. But for displaying (and encoding?) it must be compressed back to device-specific 0 - 1.0 range.</div><div dir="auto"><br></div><div dir="auto">Thing is, if I open exr example file in gimp 2.10 and re-export it - it retain its above 100% values. It does not do this if I do this same roundtrip via cingg. So yea, we seems to be clamping at output.</div></div></blockquote></div></div><div dir="auto"><br></div><div dir="auto">and this article about Premiere tries to explain Scopes, and especially floating point vs 8bit input - Premiere apparently can limit this setting for scopes themselves....</div><div dir="auto"><br></div><div dir="auto"><a href="https://blog.frame.io/2017/09/27/introduction-to-video-scopes/" rel="noreferrer noreferrer noreferrer noreferrer" target="_blank">https://blog.frame.io/2017/09/27/introduction-to-video-scopes/</a><br></div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto">so, HDR as used in ultra HD need some scope that goes to 10.000 (so, logarithmic I guess ...)!</div><div dir="auto"><br></div><div dir="auto">something we should write somewhere in TODO, I guess .....</div></div></blockquote></div></div><div dir="auto"><br></div><div dir="auto">second technique about dealing with too shadowy video:</div><div dir="auto"><br></div><div dir="auto"><a href="https://larryjordan.com/articles/premiere-pro-two-options-to-control-sdr-video-black-levels/" rel="noreferrer noreferrer noreferrer" target="_blank">https://larryjordan.com/articles/premiere-pro-two-options-to-control-sdr-video-black-levels/</a><br></div><div dir="auto"><br></div><div dir="auto">=====</div><div dir="auto"><p><strong>A CREATIVE USE OF BLEND MODES</strong></p>
<p>This tip was suggested by <strong>FoodShipNine</strong>.</p>
<p>If all you want to do is control black levels, but let highlights
float – which would apply to most web videos – here’s an option.</p>
<ul><li>Using <strong>File > New > Black Video</strong>, create a new video clip. This contains a single color – black – with a video level of 0 IRE.</li><li>Place it above all clips in the timeline, similar in concept to an adjustment layer.</li></ul>
<p style="padding-left:40px"><img src="https://wpmedia-lib.larryjordan.com/wp-content/uploads/2022/05/Levels_04.jpg" alt="" width="379" height="90"></p>
<ul><li>Select the black video clip then, in <strong>Effect Controls</strong>, set <strong>Opacity > Blend Mode</strong> to <strong>Lighten</strong>.
This sets all pixel grayscale values in all clips below the black video
clip to whichever is lighter, the black video clip or the video itself.</li></ul></div><div dir="auto">======</div><div dir="auto"><br></div><div dir="auto">so, if we does not have this mode we probably should :)</div><div dir="auto"></div></div></blockquote></div></div><div dir="auto"><br></div><div dir="auto"><a href="https://prolost.com/blog/aces" target="_blank" rel="noreferrer">https://prolost.com/blog/aces</a><br></div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto">according to this article Tarantino unintentionally got his own color space { I think this is a joke, too uncinema-tic for understanding it }</div><div dir="auto"><br></div><div dir="auto">====</div><div dir="auto"><br></div><div dir="auto">The ACEScc log color space is, in my experience, a creatively-friendly
color space for grading. There’s also a tweaked version of it called
ACEScct. The T is for “toe,” so this is the profile favored by Quentin
Tarantino.<br></div><div dir="auto"><br></div><div dir="auto">=====</div><div dir="auto"><br></div><div dir="auto">this made me stop and laugh! Not sure why .... hopefully all of this can be realized by those cube lookup tables? </div><div dir="auto"><br></div><div dir="auto"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto">Still not sure where, may be in fader? (where fade can't be more than 100%) . May be its time to ask Lion (Adam).</div></div>
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